The makers of Winfingerprint, the tool recommended by SANS and on the Insecure.org Top 75 Security Tools list, has launched a new site (Mambo BTW) and will soon have a new shareware version. While you're there, also check out Wininterrogate.

From http://www.winfingerprint.com
Winfingerprint is a Win32 MFC VC++ .NET based security tool that is able to Determine OS, enumerate users, groups, shares, SIDs, transports, sessions, services, service pack and hotfix level, date and time, disks, and open tcp and udp ports.

Pretty cool way to keep tabs on your Windows network.

Don